221669842889 has 8 divisors (see below), whose sum is σ = 242081961120. Its totient is φ = 201301110400.

The previous prime is 221669842871. The next prime is 221669842897. The reversal of 221669842889 is 988248966122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221669842889 - 2²⁰ = 221668794313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221669842859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10835747 + ... + 10856184.

It is an arithmetic number, because the mean of its divisors is an integer number (30260245140).

Almost surely, 2^221669842889 is an apocalyptic number.

It is an amenable number.

221669842889 is a deficient number, since it is larger than the sum of its proper divisors (20412118231).

221669842889 is a wasteful number, since it uses less digits than its factorization.

221669842889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21692871.

The product of its digits is 47775744, while the sum is 65.

The spelling of 221669842889 in words is "two hundred twenty-one billion, six hundred sixty-nine million, eight hundred forty-two thousand, eight hundred eighty-nine".